GM Service Manual Online
For 1990-2009 cars only

Object Number: 227991  Size: SH

At the rear shock absorbers, the air tube connectors are held on with spring clips which snap into the grooves of the shock absorber air fittings. Air tube connectors are sealed using 2 O-rings.

Important: Before disconnecting any air tube, clean the connector and the surrounding area to prevent dirt and other foreign material from entering the ELC system.

To disconnect an air tube from a shock absorber, rotate the spring clip 90 degrees out of the slots, and pull the connector from the shock absorber.

Important: Ensure that the air tube is routed correctly and all fasteners are used.

To connect an air tube to a shock absorber, lubricate the 2 O-rings using silicone lubricant, rotate the spring clip 90 degrees into the slots, and push the air tube connector on the shock absorber fitting until spring clip snaps into fitting groove.

Removal Procedure


    Object Number: 517949  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Disconnect the air tube from the left rear shock absorber.
  3. Disconnect the left rear air tube from the tee connector and remove from the vehicle.
  4. Disconnect the air tube from the right rear shock absorber.
  5. Disconnect the right rear air tube from the tee connector.
  6. Remove the air tube from the routing clips and from the vehicle.

Installation Procedure


    Object Number: 517949  Size: SH
  1. Install the right rear air tube on the vehicle in the routing clips.
  2. Connect the right rear air tube to the tee connector.
  3. Connect the right rear air tube to the right rear shock absorber.
  4. Connect the left rear air tube to the tee connector.
  5. Connect the left rear air tube to the right rear shock absorber.
  6. Important: Before driving the vehicle, turn the ignition on and wait approximately 45 seconds. This will ensure that the air adjustable shock absorbers are filled with residual pressure.

  7. Lower the vehicle.